The Finely Divided, Red, Brown, and Yellow Soil-Colouring Minerals Originate
The finely divided, red, brown, and yellow soil-colouring minerals originate by what process?
A)mechanical weathering of very fine-grained, blue-grey clays
B)chemical weathering of quartz and feldspars
C)precipitation of insoluble iron oxides during the chemical weathering process
D)mechanical weathering of the feldspars and micas in granite and rhyolite